Search Results for tag "css"

Dark Purple Youtube Theme Compatible with Firefox 57+

Makes the layout of Youtube Dark Purple while retaining the original feel.

Rated 5 out of 5 stars (45)
3,202 users

Live editor for CSS and LESS Compatible with Firefox 57+

Live preview of CSS/LESS code with an in-page editor. Autocomplete, convert LESS to CSS, beautify, minify, CSS reloader, linter, ...

Rated 5 out of 5 stars (13)
1,695 users

CSS Reload Compatible with Firefox 57+

Simplifies stylesheets reload of the current page.

Rated 4 out of 5 stars (3)
251 users

reStyle Compatible with Firefox 57+

A user style manager which can load local files and apply UI styles even in Firefox 57+

Rated 4 out of 5 stars (6)
125 users

StylRRR - Barebones Userstyle Injector

Lets you add userstyles ( website and browser themes) with a mini addon.

Rated 5 out of 5 stars (25)
271 users

devtools-highlighter Compatible with Firefox 57+

Find and highlight elements on the page with this DevTools panel, using CSS styles and selectors.

Rated 4 out of 5 stars (4)
164 users

CSS Refresh

Reload CSS without having to refresh the page.

Rated 2 out of 5 stars (14)
213 users

FireStylus for Firebug Requires Restart

FireStylus is a Firebug extension that makes Firebug display the Stylus filename and line numbers of the Stylus-generated CSS styles rather than those of the generated CSS.

Rated 1 out of 5 stars (1)
83 users

Prefswitch Requires Restart

Change preferences with the click of a button from the status-bar.

Rated 4 out of 5 stars (15)
4 users

lmnpop Requires Restart

Pops elements as resizable windows.

Rated 4 out of 5 stars (20)
247 users

Phoenix Requires Restart

An editor with real time syntax highlighting which allows edit, run and test CSS, HTML and JavaScript code. Phoenix will tell you how many CSS and JS files are loaded into a page, how big these are, it will let you edit, pack and de-obfuscate them.

Rated 4 out of 5 stars (46)
617 users

User Style Manager

Easiest way to Add and Manage Custom User Styles in Firefox.
Add, Edit, enable, disable and delete in-numerous User Style Sheets to redesign the Firefox and the Web.

Rated 4 out of 5 stars (28)
442 users

Website Theme Manager (WebExtension) Compatible with Firefox 57+

Allows you to change any website's look; choose your desired style from

Rated 4 out of 5 stars (1)
64 users

Prototypo Web Preview Compatible with Firefox 57+

Insert and synchronize fonts you create with Prototypo directly on your web site.

Not yet rated
14 users

Gmail Row Highlighter Compatible with Firefox 57+

Highlights Gmail rows on mouse over. It's a simple css injection. Link to source is on the sidebar.

Rated 5 out of 5 stars (5)
70 users

Quirksmode Search


Not yet rated
1 weekly download


Dynamically load stylesheets from plaintext files in your profile

Rated 5 out of 5 stars (1)
23 users

Crosshairify - Changes Cursor Compatible with Firefox 57+

Makes a cross-hair the default cursor. To disable just click 'disable'. This addon is designed to be very light and have very little impact on your web browser. Crosshairify changes the cursor style.

Rated 5 out of 5 stars (1)
17 users

Stylish Tools Requires Restart

Quicker access to several Stylish features through a toolbar button and/or keyboard shortcuts. Available for Firefox, Thunderbird, and SeaMonkey

Rated 4 out of 5 stars (3)
730 users